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Automotive Fuel Injector

The function of a automotive fuel injector, is to spray atomized fuel; into the combustion chamber, of an internal combustion engine.

After pushing the fuel, through a small hole, at high pressure, it becomes atomized.

The automotive fuel injector, has replaced the old carburetor system. The end result is, engines run with greater fuel efficiency and also, help to reduce emissions.

An automotive fuel injector, is a mechanical valve, that is, controlled electronically. This is what makes it capable of, opening and closing, many times a second.

So, in a traditional automotive fuel injector setup, the injector sprays fuel, into the intake manifold. It then, mixes with air, before entering the combustion chamber. In recent years, more manufacturers, have made the switch to direct injection. Consequently, a system in which, the fuel injector sprays fuel; directly into the cylinder, instead of into the intake. This system allows for, higher fuel efficiency and better emissions control, as well as higher power output, from smaller engines.

So, Why Do They Fail

An automotive fuel injector, is not a wear item and can even last, the life of the vehicle. However, as with every mechanical part, there are issues that can and do occur. Fuel injectors, can fail from contaminants (such as dirt, carbon buildup, or low-quality fuel) clogging the injector. Sometimes, they can be cleaned, but they often require replacement.

So, an automotive fuel injector can leak, due to aging of its rubber seals; or it can leak from, cracks in the injector itself. If the seals are the culprit, they can usually be replaced on their own. However, the only remedy for a cracked injector is, complete replacement. The electrical components of an injector, can also fail from age, heat, and moisture damage.

Thank You !

Noid Light - Tests For An Electrical Signal, At The Fuel Injector
Automotive Fuel Injector

Noid Light – Tests For An Electrical Signal, At The Fuel Injector

03/11/2023

Learning how to test fuel injectors, using a noid light, is easier than you think. Noid lights, provide a quick and easy method for detecting, if there’s an electrical signal, at the fuel injector. So, […]

Fuel Injector - Deposits Can Build Up And Clog The Fuel Injector
Automotive Fuel Injector

Fuel Injector – Deposits Can Build Up And Clog The Fuel Injector

12/06/2022

A dirty or clogged fuel injector, can cause classic engine problems. For instance, lean misfire, rough idle, hesitation and loss of power. So, it doesn’t take much of a restriction in a fuel injector, to […]

Fuel Injectors - Will usually only fail, in one of, three different ways.
Automotive Fuel Injector

Fuel Injectors – Will usually only fail, in one of, three different ways.

01/15/2022

So, fuel injectors are now used in pretty much all passenger vehicles. Fuel injectors are a vital part of a complex, fuel management system. Furthermore, new technology has made fuel injectors more precise than ever, […]

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